I just got Rally 2.0 and a G29. Exactly the same issue for me on my PS4 slim. Thought my wheel had a fault until i found this is an issue due to the game. Driving is good, but as other comments no real ffb for bumps or dips in the road, no ffb from suspension. But yet when going over a cattlegrid you get the kind of ffb you would expect. Hope this is fixed soon.